Grinding apparatus.



J. GILLESPIE. GRINDING APPARATUS. APPLICATION FILED MAR. 5, 1912.

PatentedApr. 22, 1913.

-w ich structure is also available for grinding into their seat the glass stoppers to fit These and other features of JAMES GILLESPIE, OF BRIDGETON, NEW JERSEY.

GRINDING APPARATUS.

Specification of Letters Iatent.

' Patented Apr. 22, 1913.

Application filed March 5, 1912. Serial No. 681,886.

To all whom it may concern:

Be it known that I, JAMES GILLESPIE, a citizen of the United States, and a resident cf Bridgeton, Cumberland county, New J ersey, have invented certain Improvements in Grinding Apparatus, of which the following is a speci cation.

My invention relates to grinding apparatus, and consists of an improved device deed to grind the necks of glass bottles,

such bottles, my invention are. more fully described hereinafter, reference being had to the aecompanying drawings, in which:

Figure 1, is a side elevation of the apparatus arranged to grind the necks of glass bottles, and Fig. 2, is a similar elevation of the same ap aratus, showing the same arranged to e eat the fitting or grinding of stoppers to fit their res ectivebottles.

The machine comprises a main standard 1, secured to a suitable base 2, and carrying a bracket 3 having suitable bearings for the support of a shaft 4. The shaft carries a pulley 5 whereby it may be driven by a belt 6 from some suitable source of power; such belt passing around an idler 7. The pulley may be provided with a suitable spline, key or feather engaging a groove 8 in the shaft whereby the latter may be raised or lowered at will, while turning, by means of a lever 10, ivoted to the standard at 11, having a counter-balance 12, and suitably connected to said shaft by means of links 13.

The lower end of the shaft may be enlarged and threaded as indicated at 14, and the bottom of the same may be bored to form a socket 16 for the reception of the head 17 of a stud 18, held in place by a cupshaped collar 19, which may beretained against moyement by a suitable lock nut 20. The stud is preferably keyed in place, which may be readily accom lished by flattening one side of the head 1 of the same so that it only rotates when the shaft is driven, but is substantially free to rock to afi'ord the necessary and desired universality of the connection. The stud carries a plug 21, preferably tapered in sha e which is designed to enter the neck 0 the bottle, andwhen the shaft is rotated, such plug efi'ects the grinding and smoothing of suchneck.

The stud ma be covered by a sleeve 22 of a harder meta to constitute the actual wearing part.

. The bottle may be supported in a suitable chuck or frame, comprisin arms 23 with leather contacts 24; such c uck being provided with suitable fastening means whereby it may be firmly secured to the bottle to hold the latter in a fixed position with respect to the grinding device.

In Fig; 2, I have shown a form of chuck .for holding a stopper A. This member is attached to the stud 18 and consists of a;

body element 25, socketed at 26 to'receive' the stud, with a pair of levers 27 pivoted to said body at 28, and carrying jaws 29'- adapted to engage the head a of the stopper. Springs 30 pivoted to the body element at 531 are provided to hold'said jaws inwardly fso as to grip the head of the sto per and insure that such stopper is hel against will be understood, of course, that a grinding tool or element .of the character illustrated at 21, in Big. 1, might be held by said jaws 29 in the same manner as the stopper is held.

In each instance, an abrading agent is fed to the tool or stopper, as the case may be, and for this purpose, I provide a suitable receptacle such as 32, having a spout 33 leadin to the open mouth of the bottle.

In the operation of grinding the bottle necks, the bottle is set in place, and then the grinding element is rotated and lowered into the grinding position with respect to. the bottle fleck, while sand or other abrad'ant and water are simultaneously directed thereto from the tank 32. The lever 10 is then lowered by the operator, and the plug enters and grinds the neck of the bottle.

. B the use of a ball and socket or universal oint, the grinding plug is self-centering, an much time and expense is saved over the old style of. lathe grinding formerly practised. Downward pressure applied by the lever effects a more uniform and effective action of the grinding-tool than the old forms of lathe devices.

It will be understood, of course, that the bottles are roughly shaped before the grinding operation is commenced, and that the stoppers are semior completely finished to substantially the same taper as the 75 movement independently of the shaft. ,It r

' ground bottle neck; the grinding in of said stoppers insuring that they will fit the bottle.

Sand and water may be employed in the grinding of the bottle necks, but in the grinding of the stoppers into place, it is preferable to employ emery or other suitably fine abrasive material to obtain a close fitting joint between the stopper and bottle neck.

I claim:

1. The combination of a standard forming a support for a bottle,'a vertical shaft, agrinding tool, a ball and socket joint between said shaft and the grinding tool,

means for driving said shaft, and means for introducing said grinding tool into the neck of thabottle.

2. The combination of a bottle support, a vertical shaft, a support for the same, means for driving said shaft, a ball and socket joint carried by said shaft, a grinding element secured to said ball and socket joint, a lever for lowering the shaft to bring the grinding element into contact with the bottle, a weight carried by said lever to automatically raise the shaft and grinding element after-the grindingoperation is completed, and means for introducing an' abradant to the point of grindin 3. The combination of a stan ard, a bottle support carried thereby, a vertically movable shaft, means for driving the same, means for raising and lowering said shaft, a universally jointed stud carried by said shaft, a grinding element, a plurality of pivoted jaws carried by said stud for engag ng said grinding element, a lever for lowering the shaft to operate the grinding tool, a

,weight carried by said lever to automatically raise the shaft and grinding element after the grinding o eration is completed,

and means for intro ucing an abradant at the point of grinding.

4. The combination of a standard, a bottle support carried thereby, a vertically movable shaft, means for driving the same,

means for raising and lowering said shaft,

a universally jointed stud carried by said shaft, a grinding element, a plurality of pivoted jaws carried b said stud for en' gaging said grinding e ement, sprin s car'- ried by said stud for operating sai jaws, and means for introducing an abradant at the point of grinding.

In testimony whereof, have signed in). name to this specification, in the presence of' two subscribing witnesses.

JAMES GILLESPIE. Witnesses:

L. L. STOKES, J. L. SHOEMAKER.

Copies ot'this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

